NVidia / HDMI / No External Monitor issue after upgrade

[tbg]

The solution was likely posted in recent announcements:

[Intervention potentially required] Python 3.10 and you

If you're on a laptop with Optimus-manager you'll want to reinstall with Pacman -Syyu. If you reboot before hand you'll get the black screen and have to manually connect to wifi (damn near impossible) or use ether net cable (what I ended up doing).